# 420254309 Seadoo Timing Gear | Genuine Used Part

🔧 Product Description

  

Genuine Sea-Doo Timing Gear, 38 Teeth - Part Number: 420254309

  

This genuine Sea-Doo timing gear is used in the engine timing system on Rotax 4-TEC and ACE engine assemblies. It is a 38-tooth OEM gear used to maintain correct mechanical timing between rotating engine components.

  

⚙️ Key Features

  

• Genuine Sea-Doo timing gear

• OEM part number 420254309

• 38-tooth timing gear

• Factory engine timing-system component

• Direct-fit OEM gear for listed Sea-Doo Rotax engine assemblies

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• No available supersession chain

  

OEM / Related Numbers:

  

• 420254309

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Sea-Doo Rotax 4-TEC / ACE timing systems

  

Typically suits:

  

• Engine models:

• GTI 130 / GTI SE 130 — 1503 4-TEC

• GTI SE 155 / GTI LTD 155 — 1503 4-TEC

• GTS 130 — 1503 4-TEC

• GTR 215 / GTR 230 — 1503 4-TEC

• GTX 155 / GTX S 155 — 1503 4-TEC

• GTX 215 / GTX LTD 215 — 1503 4-TEC

• GTX LTD iS 260 — 1503 4-TEC

• RXP 215 / RXP-X 255 / RXP-X 260 — 1503 4-TEC

• RXT 215 / RXT-X 255 / RXT-X 260 — 1503 4-TEC

• RXP 300 / RXT-X 300 — 1630 ACE

• WAKE 155 / WAKE PRO 215 / WAKE PRO 230 — 1503 4-TEC

• Challenger / Speedster / Sportster 4-TEC engine assemblies using the 38-tooth timing gear

  

• HP Range: Approximately 130HP - 300HP

• Engine Type: Sea-Doo Rotax 4-TEC / ACE Engine Timing Assembly

• Year Range: Approximately 2002 - 2020

  

🔌 Function

  

The timing gear keeps engine timing aligned so the camshaft and related rotating components operate in the correct relationship to crankshaft position.

  

Common signs of failure:

  

• Abnormal timing noise

• Damaged or worn gear teeth

• Incorrect cam timing after engine service

• Poor running from timing misalignment

• Metal debris or wear marks in timing assembly

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 30.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Sea-Doo Parts | Jet Ski Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 30.00 AUD | In stock |

## Images

- 420254309 Seadoo Timing Gear | Genuine Used Part
- 420254309 Seadoo Timing Gear | Genuine Used Part
- 420254309 Seadoo Timing Gear | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/420254309-seadoo-timing-gear-genuine-used-part)
> Updated: 2026-07-02